linux-kernel - Re: 2.6.21-rc5-mm4

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Date:	Tue, 3 Apr 2007 18:30:37 +0200 (CEST)
From:	Jiri Kosina <jikos@...os.cz>
To:	"Kok, Auke" <auke-jan.h.kok@...el.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, e1000-devel@...ts.sourceforge.net
Subject: Re: 2.6.21-rc5-mm4

On Tue, 3 Apr 2007, Kok, Auke wrote:

> Also, it would help a lot if you knew what kind of settings your init 
> scripts are trying to configure. It seems that something is setting 
> multicast or promiscuous mode. Do you happen to know which command is 
> being executed by the shell?

It's 100% reproducible by running dhclient on the interface.

The kernel also panics (with different stacktrace but the same wrong 
address it tries to dereference - 0xffffffff) when I do this:

(none):/# modprobe e1000
Intel(R) PRO/1000 Network Driver - version 7.4.35-k2-NAPI
Copyright (c) 1999-2007 Intel Corporation.
ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 16
e1000: 0000:02:00.0: e1000_probe: (PCI Express:2.5Gb/s:Width x1) 
00:0e:0c:72:b8:ad
e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
(none):/# ifconfig eth0 up
BUG: unable to handle kernel paging request at virtual address ffffffff
 printing eip:
ffffffff
*pde = 00005067
*pte = 00000000
Oops: 0000 [#1]
SMP
last sysfs file: power/resume
Modules linked in: e1000 ext3 mbcache jbd edd sg fan generic ata_piix 
libata thermal processor sd_mod scsi_mod ide_disk ide_core
CPU:    0
EIP:    0060:[<ffffffff>]    Not tainted VLI
EFLAGS: 00010046   (2.6.21-rc5-mm4-default #3)
EIP is at 0xffffffff
eax: 00000000   ebx: 00000000   ecx: 00000000   edx: 00000000
esi: 00000000   edi: c0462008   ebp: 00000080   esp: c0463f94
ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
Process swapper (pid: 0, ti=c0462000 task=c038d340 task.ti=c0462000)
Stack: c0102297 00000060 00000246 00000000 c049f5a4 c1d095a4 c01023fa c0363b12
       20070126 c1d11000 c0467ae7 c034a48a c04671b9 00000000 00000000 00000000
       00000000 00010000 00000000 00000000 00000000 c04887c0 00020800 00099800
Call Trace:
 [<c0102297>] mwait_idle_with_hints+0x3b/0x3f
 [<c01023fa>] cpu_idle+0xa6/0xbf
 [<c0467ae7>] start_kernel+0x459/0x461
 [<c04671b9>] unknown_bootoption+0x0/0x202
 =======================
INFO: lockdep is turned off.
Code:  Bad EIP value.
EIP: [<ffffffff>] 0xffffffff SS:ESP 0068:c0463f94
Kernel panic - not syncing: Attempted to kill the idle task!


Seeing "mwait" there, it seemed like ACPI might be involved. Booting with 
acpi=off didn't improve the situation though.

I just pulled your e1000 git tree into vanilla 2.6.21-rc5 ytrr and I can't 
reproduce the problem, so it might be caused by something else.

Will try to narrow down what is causing it.

-- 
Jiri Kosina
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